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Finding the Fourth Proportional to 295.43, 407.59 and 216.90

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Solution

The fourth proportional to 295.43, 407.59 and 216.90 is: 299.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.43 : 407.59 = 216.90 : x
  2. Step 2: Convert to fraction form
    295.43/407.59 = 216.90/x
  3. Step 3: Cross multiply
    295.43x = 407.59 × 216.90
  4. Step 4: Simplify right side
    295.43x = 88,406.27
  5. Step 5: Solve for x
    x = 88,406.27/295.43
  6. Step 6: Final answer
    x = 299.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.